Flatness measuring instrument
By designing a planarity measuring instrument, the upper and lower end surfaces of the plate are simultaneously detected by the position adjustment device and laser displacement sensor, the problem of only detecting high points in traditional methods is solved, and efficient and lossless planarity detection is achieved.
Patent Information
- Application Number
- CN202422361484.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-26
- Publication Date
- 2025-07-18
- Estimated Expiration
- 2034-09-26
AI Technical Summary
Traditional measurement methods can only detect the high point of the chassis twist, cannot obtain data on the low point of the twist, and are prone to scratch the product surface.
A planarity measuring instrument is designed, including a chassis, a support frame, a pallet, a first and second position adjustment devices and a detection head. Through the position adjustment device, the detection head is adjusted on the X, Y, and Z axes, so as to achieve simultaneous detection of the upper and lower end surfaces of the plate, and use a laser displacement sensor for precision measurement.
It improves the detection efficiency and can obtain deformation data on both upper and lower sides at the same time, avoid scratching the product surface, and the detection results are more accurate.
Smart Images
Figure CN223122191U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a measuring device, in particular to a flatness measuring instrument. Background Art
[0002] In the field of sheet metal production of computer chassis and server chassis, since more circuit boards need to be integrated on the chassis, especially server chassis are mainly used in a stacked and composite manner, there are high requirements for the overall flatness and twist of the chassis. The traditional measurement method is to place the chassis on a fixture and measure by moving a scraping knife and conducting electricity (that is, moving the scraping knife in parallel, the scraping knife is supplied with low-voltage direct current. When the chassis is twisted and deformed, the horizontal movement of the scraping knife will contact the high point of the chassis, resulting in an alarm of current conduction). The traditional measurement method has limitations: one is that only the high points of the twist can be known, and the data of the low points of the twist cannot be obtained; the other is that the conduction method must contact the product, which is easy to scratch the surface of the product. Summary of the Utility Model
[0003] Based on this, it is necessary to provide a flatness measuring instrument in view of the deficiencies in the prior art.
[0004] A flatness measuring instrument includes a chassis, a support frame installed on the chassis, a support plate installed on the support frame, a first position adjusting device installed on the support frame and above the support plate, a second position adjusting device installed on the chassis and below the support plate, a first detection head installed on the first position adjusting device, and a second detection head installed on the second position adjusting device. During detection, the sheet material is placed on the support plate. The first position adjusting device drives the first detection head to adjust its position on the X, Y, and Z axes, so that the first detection head performs flatness detection on the upper end surface of the sheet material. The second position adjusting device drives the second detection head to adjust its position on the X and Y axes, so that the second detection head performs flatness detection on the lower end surface of the sheet material.
[0005] In one embodiment, the number of the support frames is two, the support frames are arranged in an inverted L shape, and the two support frames are opposite to each other in the horizontal direction. The number of the support plates is also two, and the two support plates are respectively installed on the two support frames, and the two support plates are spaced apart by a certain distance in the horizontal direction.
[0006] In one embodiment, it further includes two limiting plates, and the two limiting plates are respectively installed on the two support plates. During detection, the two sides of the sheet material to be detected are respectively placed on the two support plates at positions inside the limiting plates.
[0007] In one embodiment, the first position adjustment device includes a first Y-axis driving device, a first X-axis driving device mounted on the first Y-axis driving device, and a first Z-axis driving device mounted on the first X-axis device. The first detection head is mounted on the first Z-axis driving device. The first Y-axis driving device, the first X-axis driving device, and the first Z-axis driving device respectively adjust the position of the first detection head on the X, Y, and Z axes.
[0008] In one embodiment, the first Y-axis driving device includes two groups of first Y-axis guide rails respectively installed on two support frames, two first Y-axis sliders installed on the two groups of first Y-axis guide rails, a first Y-axis screw rod passing through the first Y-axis sliders and in threaded cooperation with the first Y-axis sliders, and a first Y-axis driving motor connected to the first Y-axis screw rod.
[0009] In one embodiment, the first X-axis driving device includes a first cross beam installed on two first Y-axis sliders, a first X-axis guide rail installed on the first cross beam, a first X-axis slider installed on the first X-axis guide rail, a first X-axis screw rod passing through the first X-axis slider and in threaded cooperation with the first X-axis slider, and a first X-axis driving motor connected to the first X-axis screw rod.
[0010] In one embodiment, the first Z-axis driving device includes a Z-axis frame installed on the first X-axis slider, a first Z-axis guide rail installed on the Z-axis frame, a first Z-axis slider installed on the first Z-axis guide rail, a first Z-axis screw rod passing through the first Z-axis slider and in threaded cooperation with the first Z-axis slider, and a first Z-axis driving motor connected to the first Z-axis screw rod.
[0011] In one embodiment, the second position adjustment device includes a second Y-axis driving device and a second X-axis driving device mounted on the second Y-axis driving device. The second detection head is mounted on the second X-axis driving device. The second Y-axis driving device and the second X-axis driving device respectively adjust the position of the second detection head on the X and Y axes.
[0012] In one embodiment, laser displacement sensors are provided on both the first detection head and the second detection head.
[0013] The beneficial effects of the flatness measuring instrument of the present utility model are as follows: By providing a first position adjusting device, a second position adjusting device, a first detection head, and a second detection head, the first detection head is installed on the first position adjusting device, and the second detection head is installed on the second position adjusting device. The first position adjusting device drives the first detection head to adjust its position in the X and Y directions to perform flatness detection on the upper end surface of the plate, and the second position adjusting device drives the second detection head to adjust its position in the X and Y axes to perform flatness detection on the lower end surface of the plate. During detection, the first detection head and the second detection head can perform detection simultaneously, effectively improving the detection efficiency. Moreover, the deformation data of the upper and lower surfaces can be obtained simultaneously, and the practicability is strong. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 is a schematic structural diagram of the flatness measuring instrument of the present utility model;
[0015] Figure 2 is Figure 1 a schematic structural diagram of the flatness measuring instrument shown after removing the first position adjusting device, the first detection head and part of the outer shell;
[0016] Figure 3 is Figure 2 a schematic structural diagram of the flatness measuring instrument shown from another angle after removing the first position adjusting device, the first detection head and part of the outer shell;
[0017] Figure 4 is Figure 1 a schematic connection diagram of the first position adjusting device, the support frame and the first detection head of the flatness measuring instrument shown after removing part of the outer shell. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0018] In order to make the above objects, features, and advantages of the present utility model more obvious and understandable, the following detailed description of the specific embodiments of the present utility model will be given in conjunction with the accompanying drawings. Many specific details are set forth in the following description in order to fully understand the present utility model. However, the present utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed below.
[0019] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.
[0020] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present utility model, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.
[0021] In the present utility model, unless otherwise clearly specified and defined, the terms "mounted", "connected", "connected to", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.
[0022] In the present utility model, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.
[0023] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or there may be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation.
[0024] Please refer to Figures 1 to 4 , the present utility model provides a flatness measuring instrument for detecting the flatness of a chassis plate or other types of plates 100. The flatness measuring instrument includes a chassis 10, a support frame 20 mounted on the chassis 10, a support plate 30 mounted on the support frame 20, a first positioning device 40 mounted on the support frame 20 and located above the support plate 30, a second positioning device 50 mounted on the chassis 10 and located below the support plate 30, a first detection head 60 mounted on the first positioning device 40, and a second detection head 70 mounted on the second positioning device 50. During detection, the plate 100 is placed on the support plate 30. The first positioning device 40 drives the first detection head 60 to adjust its position on the X, Y, and Z axes so that the first detection head 60 detects the flatness of the upper end surface of the plate 100. The second positioning device 50 drives the second detection head 70 to adjust its position on the X and Y axes so that the second detection head 70 detects the flatness of the lower end surface of the plate 100.
[0025] In this embodiment, the number of the support frames 20 is two. The support frames 20 are arranged in an inverted L shape, and the two support frames 20 are opposite to each other in the horizontal direction. The number of the support plates 30 is also two. The two support plates 30 are respectively mounted on the two support frames 20, and the two support plates 30 are spaced apart by a certain distance in the horizontal direction. In addition, the present utility model further includes two limit plates, and the two limit plates are respectively mounted on the two support plates 30. During detection, the two sides of the plate 100 to be detected are respectively placed on the two support plates 30 at positions inside the limit plates.
[0026] The first positioning device 40 includes a first Y-axis driving device 41, a first X-axis driving device 42 mounted on the first Y-axis driving device 41, and a first Z-axis driving device 43 mounted on the first X-axis device. The first detection head 60 is mounted on the first Z-axis driving device 43. The first Y-axis driving device 41, the first X-axis driving device 42, and the first Z-axis driving device 43 respectively adjust the position of the first detection head 60 on the X, Y, and Z axes.
[0027] Specifically, the first Y-axis driving device 41 includes two groups of first Y-axis guide rails 411 respectively installed on two support frames 20, two first Y-axis sliders 412 installed on the two groups of first Y-axis guide rails 411, a first Y-axis screw rod 413 passing through the first Y-axis sliders 412 and in threaded cooperation with the first Y-axis sliders 412, and a first Y-axis driving motor 414 connected to the first Y-axis screw rod 413. During adjustment, the first Y-axis driving motor 414 drives the first Y-axis sliders 412 to slide along the first Y-axis guide rails 411 through the first Y-axis screw rod 413. During the sliding process of the first Y-axis sliders 412, the first X-axis driving device 42, the first Z-axis driving device 43 installed on the first X-axis device, and the first detection head 60 are driven to adjust their positions along the Y-axis.
[0028] The first X-axis driving device 42 includes a first cross beam 421 installed on two first Y-axis sliders 412, a first X-axis guide rail 422 installed on the first cross beam 421, a first X-axis slider 423 installed on the first X-axis guide rail 422, a first X-axis screw rod 424 passing through the first X-axis slider 423 and in threaded cooperation with the first X-axis slider 423, and a first X-axis driving motor 425 connected to the first X-axis screw rod 424. During adjustment, the first X-axis driving motor 425 drives the first X-axis slider 423 to slide along the first X-axis guide rail 422 through the first X-axis screw rod 424. During the sliding process of the first X-axis slider 423, the first Z-axis driving device 43 and the first detection head 60 are driven to adjust their positions along the X-axis.
[0029] The first Z-axis driving device 43 includes a Z-axis frame 431 installed on the first X-axis slider 423, a first Z-axis guide rail 432 installed on the Z-axis frame 431, a first Z-axis slider 433 installed on the first Z-axis guide rail 432, a first Z-axis screw rod 433 passing through the first Z-axis slider 433 and in threaded cooperation with the first Z-axis slider 433, and a first Z-axis driving motor 434 connected to the first Z-axis screw rod 433. During adjustment, the first Z-axis driving motor 434 drives the first Z-axis slider 433 to slide along the first Z-axis guide rail 432 through the first Z-axis screw rod 433. During the sliding process of the first Z-axis slider 433, the first detection head 60 is driven to adjust its position along the X-axis.
[0030] The second adjustment device 50 includes a second Y-axis driving device 51 and a second X-axis driving device 52 installed on the second Y-axis driving device 51. The second detection head 70 is installed on the second X-axis driving device. The second Y-axis driving device 51 and the second X-axis driving device 52 respectively adjust the position of the second detection head 70 on the X and Y axes.
[0031] In addition, the working modes of the second Y-axis driving device 51 and the second X-axis driving device 52 are respectively the same as those of the first Y-axis driving device 41 and the first X-axis driving device 42, and will not be elaborated here.
[0032] Both the first detection head 60 and the second detection head 70 are provided with laser displacement sensors 61 and 71. The laser displacement sensor is a sensor that uses laser technology for measurement. It consists of a laser, 激光检测器 and a measurement circuit. It can be used for precise geometric measurements such as measuring displacement, thickness, vibration, distance, diameter, etc. During measurement, the first Y-axis driving device 41 and the first X-axis driving device 42 respectively adjust the position of the first detection head 60 on the X and Y axes. The first detection head 60 obtains the deformation data of the upper end surface of the sheet 100 through distance detection. The second Y-axis driving device 51 and the second X-axis driving device 52 respectively adjust the position of the second detection head 70 on the X and Y axes. The second detection head 70 obtains the deformation data of the lower end surface of the sheet 100 through distance detection.
[0033] The beneficial effects of the flatness measuring instrument of the present utility model are as follows: By setting the first position adjustment device 40, the second position adjustment device 50, the first detection head 60, and the second detection head 70, the first detection head 60 is installed on the first position adjustment device 40, and the second detection head 70 is installed on the second position adjustment device 50. The first position adjustment device 40 drives the first detection head 60 to adjust its position in the X and Y directions, so that the first detection head 60 detects the flatness of the upper end surface of the sheet 100. The second position adjustment device 50 drives the second detection head 70 to adjust its position in the X and Y axes, so that the second detection head 70 detects the flatness of the lower end surface of the sheet 100. During detection, the first detection head 60 and the second detection head 70 can perform detection simultaneously, effectively improving the detection efficiency. Moreover, the deformation data of the upper and lower surfaces can be obtained simultaneously, and the practicability is strong.
[0034] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as the combinations of these technical features do not conflict, they should all be considered to be within the scope described in this specification.
[0035] The above-described embodiments only represent several implementation manners of the present utility model. Their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several deformations and improvements can still be made, and these all belong to the protection scope of the present utility model. Therefore, the protection scope of the utility model patent should be subject to the appended claims.
Claims
1. A flatness measuring instrument for detecting the flatness of a sheet material, characterized in that, It includes a chassis, a support frame installed on the chassis, a pallet installed on the support frame, a first position adjustment device installed on the support frame and above the pallet, a second position adjustment device installed on the chassis and below the pallet, a first detection head installed on the first position adjustment device, and a second detection head installed on the second position adjustment device. During detection, the sheet material is placed on the pallet. The first position adjustment device drives the first detection head to adjust its position on the X, Y, and Z axes, so that the first detection head performs flatness detection on the upper end face of the sheet material. The second position adjustment device drives the second detection head to adjust its position on the X and Y axes, so that the second detection head performs flatness detection on the lower end face of the sheet material.
2. The flatness measuring instrument according to claim 1, characterized in that, The number of the support frames is two. The support frames are arranged in an inverted L shape, and the two support frames are opposite to each other in the horizontal direction. The number of the pallets is also two. The two pallets are respectively installed on the two support frames, and there is a certain distance between the two pallets in the horizontal direction.
3. The flatness measuring instrument according to claim 2, characterized in that, It further includes two limit plates, which are respectively installed on the two pallets. During detection, the two sides of the sheet material to be detected are respectively placed on the two pallets at positions inside the limit plates.
4. The flatness measuring instrument according to claim 1, characterized in that, The first position adjustment device includes a first Y-axis driving device, a first X-axis driving device installed on the first Y-axis driving device, and a first Z-axis driving device installed on the first X-axis device. The first detection head is installed on the first Z-axis driving device. The first Y-axis driving device, the first X-axis driving device, and the first Z-axis driving device respectively adjust the position of the first detection head on the X, Y, and Z axes.
5. The flatness measuring instrument according to claim 4, characterized in that, The first Y-axis driving device includes two groups of first Y-axis guide rails respectively installed on the two support frames, two first Y-axis sliders installed on the two groups of first Y-axis guide rails, a first Y-axis screw rod passing through the first Y-axis sliders and in threaded cooperation with the first Y-axis sliders, and a first Y-axis driving motor connected to the first Y-axis screw rod.
6. The flatness measuring instrument according to claim 5, characterized in that, The first X-axis driving device includes a first cross beam installed on the two first Y-axis sliders, a first X-axis guide rail installed on the first cross beam, a first X-axis slider installed on the first X-axis guide rail, a first X-axis screw rod passing through the first X-axis slider and in threaded cooperation with the first X-axis slider, and a first X-axis driving motor connected to the first X-axis screw rod.
7. The flatness measuring instrument according to claim 6, characterized in that, The first Z-axis driving device includes a Z-axis frame installed on the first X-axis slider, a first Z-axis guide rail installed on the Z-axis frame, a first Z-axis slider installed on the first Z-axis guide rail, a first Z-axis screw rod passing through the first Z-axis slider and in threaded cooperation with the first Z-axis slider, and a first Z-axis driving motor connected to the first Z-axis screw rod.
8. The flatness measuring instrument according to claim 1, characterized in that, The second position adjustment device includes a second Y-axis driving device and a second X-axis driving device installed on the second Y-axis driving device. The second detection head is installed on the second X-axis driving device. The second Y-axis driving device and the second X-axis driving device respectively adjust the position of the second detection head on the X and Y axes.
9. The flatness measuring instrument according to claim 5, characterized in that, Laser displacement sensors are provided on both the first detection head and the second detection head.